This paper introduced professor Wang ruoguang's recognition on the mechanism of irregular menstruation, the rule of regulating menstruation, and the clinical experience of Chinese and Western medicine with the typical PCOS case. He also considered that there were rhythmic changes and considering the changes in the reproductive and endocrine. Any factors affected therhythmic changes and considering the changes of reproduction and endocrine, which would lead to menstrual disorder. Regulating menstruation aimed at restoring and rebuilding the ord...